Coal breaker and cleaner.



G. W. BURTON & J. L. HILLER.

COAL BREAKER AND CLEANER.

APPLICATION FILED MAY 12, 1908.

1,086, 1 29, Patented Feb. 3, 1914.

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GOAL BREAKER ANDGLEANER. APPLIOAITION FILED MAY 12, 1908. 1,086,129. 7Patented Feb. 3, 1914.

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GEORGE W. BORTON, OF HADDONFIELD, NEW JERSEY, ANDJOSEPH L. KILLER, OFEAST MATTAPOISETT, MASSACHUSETTS, ASSIGNORS T0 PENNSYLVANIA GRUSHER'COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF NEW YORK;

COAL BREAKER AND CLEANER.

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Specification of Letters Patent.

Application'filed May 12, 1908. Serial No. 132,488.

PatentcdFeb. 3, 191a.

To all whom it may concern Be it known that we, GEORGE W. Bowen andJOSEPH L. HILLER, citizens of the United States, residing, respectively,in I-Iaddonfield, New Jersey, and East Mattapoisett, Massachusetts, haveinvented certain Improvements in Coal Breakers and Cleaners, of whichthe following is a specification.

Qne object of our invention is to provide a machine particularlydesigned for breaking coal and separating sulfur balls and slatetherefrom, which shall possess certain improvements in the constructionof its parts, whereby such machine shall be rendered more efficient inoperation as well as more substantial in construction than has hithertobeen the case in machines of the same class.

It is further desired to provide a breaking and cleaning machine havingits parts so arranged that the continuous feeding through the machine ofthe material under treatment shall be assured, while in addition certainof the parts shall be so constructed as to permit of their adjustment tovary the time required for the passage of a given body of materialthrough the machine.

We also desire that the various parts of our machine shall be soconstructed and of such a nature and arrangement as will permit of theirbeing manufactured and assembled with a minimum of expense consistentwith the provision .of a substantial and reliable structure.

These and other advantageous ends we secure as hereinafter set forth,reference being had to the accompanying drawings, in which Figure 1, isa vertical longitudinal section of the machine constituting ourinvention; Fig. 2, is a transverse vertical section of the machineillustrated in Fig. 1, taken on the line 2-2 of said figure; Fig. 3, isa fragmentary section of one end of our machine, showing the dischargeplow in position; Fig. 4, is a perspective view illustrating the detailconstruction of the discharge plow;

Figs. 5 and 6, are respectively a plan and a side elevation of one ofthe conveyor plates, and Fig. 7, is a fragmentary perspective view ofone end of our machine, illustrating in detail the construction of oneof the lift-- in shelves.

n the above drawings, A represents two frames or supporting structureson each of which is mounted a shaft bearing a for the support of themoving part of the machine; The supporting structure or framework ofsaid part consists of a pair of circular heads B and C united by anumber of parallel bars or beams D and each provided with spokes,indicated at b and 0, respectively radiating from hubs b and 0.

From Fig. 2, it will be seen that the heads B and C are each made in twoparts joined along a diametrical line, the parts of the head B beingheld together by bolts 6 and 6 of which the former serve to clamp thehub immovably to a shaft 6 operative in the adjacent bearing A. The headC is similarly made in two parts and likewise clamped to a shaft 0operative in the second of the bearings a.

From Fig. 1, it will be noted that each of the hubs is provided at eachend with a cylindrical projection, indicated at b and 0? respectively,and on these are shrunk steel rings (1, whereby the hubs are stillfurther clamped to their respective shafts. The

head B is of frusto conical form and possesses an integral portion 6projecting beyond the plane of the outside edges of the spokes b so thatthe spout R, whereby material is discharged into the casing, ispermitted to project inside the end of the head without being interferedwith by the spokes. These spokes, as well as the spokes c, are usuallyof an I-beam sect-ion. On the inside faces of the beams D which join theheads are bolted a series of plates (1, having perforations d of anydesired size and together serving to form a generally cylindricalscreen. Within this screen are mounted any desired number of inwardlyprojecting longitudinally extending shelves E substantially parallelwith the line of the shafts 0* and b and designed to engage and carry upand drop the coal or other material operated on, as the drum formed bythe frame and its screen is revolved. Each of these shelves is made of anumber of removable sections, as illustrated in Fig. 1, which are heldby bolts 0 to the flange of the beams D. They are of an bshaped section,each provided with a number of buttresses or braces c.

As shown in Fig. 7 we place at that end of each shelf adjacent to thehead 0, (which is at the discharge end of the drum) an end piece 6whereby material engaged by the shelf is prevented from being droppedoff the end thereof out of the machine. These end sections each consistof a-flat plate having a flange 6 extending at right angles to it andparallel with the flat face of the end of the shelf, to which it is heldby bolts. For causing longitudinal movement of the coal or othermaterial through the drum, we provide this with a number of inwardlyprojecting conveyor blades F, inclined to a plane transverse of saiddrum. As shown best in Figs. 5 and 6, each of these conveyer bladesconsists of a portion f extending substantially at right angles to thesurface of the screen plate upon which it is mounted, and presenting aperfectly flat or unobstructed face to the material operated on. Eachblade has in addition a flat lug or flange f. projecting in a planesubstantially at right angles to the portion f and provided with a slot7, preferably formed in the arc of a circle drawn from a centercoincident with the central line of a bolt hole i extending the fullheight of the plate F adjacent to one end thereof. At the opposite endof the plate there is placed another bolt hole, indicated in dottedlines at ffl which' is of generally conical form, being tapered from thebottom to the top. On the bottom face of the plate, around the boltholes f and g, are circular bosses f and f, whereby the earing of theplate upon the screen plate is localized. Said plate is firmly heldin-position by bolts 7" and f respectively mounted in the holes i andthe slot f and extending through previously prepared holes in the screenplate at into the flanges of one of the beams D. These two bolts serveas the primary holding means for the blade and after the conveyer-plateF has been adjusted to, the desired angle by being turned about.

the bolt as a center, the nuts on this bolt and on t e bolt i are setup. A third bolt f is then introduced into the tapered hole 7 of theplate, which by reason of its shape permits the said bolt to be inclinedas necessary, so that it will pass through one of the holes of thescreen. This end of the blade is therefore held by its bolt directly tothe screen plate, which bolt' therefore serves as a reinforcing holdingmeans.

For assisting in the discharge of material from the drum, we provide adischarge plow Gr shown in Figs. 1 and 4:, and it will be seen that thisconsists of a casting or forging having a portion g designed at one endto lie in contact withthe inner surface of one of the screen plates atthe discharge end of the drum, so as to present a substantially flatsurface to the material acted on. From said end it is bent or curved sothat its opposite end lies in a plane substantially at right angles tothe axis of the drum, there being a raised flange g for the inner edgeof this portion g. The second end of the plow is turned at right angles,as shown at 9 so as to extend parallel with the axis of the drum and isdesigned to engage one of r the spokes 0 of the head C to which it isproperly bolted. The plow also has a portion between its receiving end 9and the turned over portion 9 which serves as a bolting lug whereby itsreceiving end held to the screen plates or to the longitudinal beams D,as the case may be. For drivin the drum, we provide a gear H which ispreferably made in a number of sections rigidly mounted upon the head Band for this purpose the various sections are provided with an inwardlyextending flange h engaged by the bolts 03 whose main function is tohold together the transverse beams D of the frame and the head B. Inorder to reduce the machine worknecessary, as well as to localize thebearing of the gear sections upon the head, we countersink the gearflange as well as the head, placing therein washers h, as shown best inFig. 1. The bolts pass through the flanges of the gear sections, thewashers h and the ends of the beams D, holding the parts rigidly inplace and yet rendering possible the removal of one of the gear.sections independently of the remainder whenever this may be necessary.

Under operating conditions coal or other material to be cleaned andbroken is fed through the chute B into the drum formed by the screenplates 03 while said drum is driven by power applied through the gear H,at a speed of from 10 to 15 revolutions per minute. Under theseconditions the coal delivered through the chute is engaged by thevarious shelves E, and after beingcarried up on one side of the drum, ispermitted to drop from said shelves so that it is more or less broken.The foreign material, such as slate and sulfur balls, bein harder thanthe coal, is not materially affhcted by this repeated elevation anddropping, while the coal, being more or less shattered and broken,passes through the screen platesd into a suitable receptacle. Theconveyer blades F insure the movement of the mass under treatmentlongitudinally through the drum, and by the time it approaches the headC, practically all of the coal has been broken sufficiently to havepassed through the openings inthe screen plates d, whilethrough themachine at the speed best suit-v ed to insure the complete breakage ofthe its coal and therefore its separation from the foreign bodies beforethese latter are discharged, and We have found that the action of theblades is rendered more satisfactory and the machine as a Whole mademore efficient by making their engaging faces smooth and free from theheads of the bolts used to hold them in place. The shelves being made inindependently removable sections, can easily and quickly be taken outwhen broken, While by the provision of the end plates, the prematuredelivery of material from the machine is effectually prevented.

VVe claim 1. A rotatably mounted screen drum open at the ends andprovided with a head at each end; with means for delivering materialinto the drum through one of the heads; said latter headhaving a mainportion of frusto-conical form; a hub; and a series of spokes ofI-section radiating therefrom to said main portion; the flanges of thesaid spokes lying in planes at right angles to the axis of the drum.

2. The comblnation in a cleaning and breaking machine, of a drumconsisting of two heads having spokes of I-section placed with theirflanges lying in planes at right angles to the axis of the drum; aseries of beams connecting said heads; a screen structure mounted onsaid beams; means for delivering material to the drum; and a plow fordischarging material from the drum; said plow consisting of a-bentstructure having one end fastened to the frame of the machine and placedto engage material at the end of the drum; its other end being providedwith an extension in engagement with the web of one of the spokes.

3. The combination of a rotatably mounted screen drum having within it aplurality of angularly set conveyer blades; each of said bladespresenting a substantially flat plow at the delivery end thereof.

blade; with bolts passing through said holes so as to retain the bladein position.

5. The combination with supporting bearings of two shafts; a hub rigidlyfastened to each shaft and provided with radiating spokes of I-beamsection; the flanges of said spokes lying in planes at right angles tothe axis of the drum; a frusto-conical structure mounted on each set ofspokes; a series of substantially parallel beams extending between eachof said structures; a series of perforated plates fastened to the insidesurface of said beams to form a screen drum;

a plurality of shelves extending parallal to the axis of the drum andprojecting inwardly from the same; a series of conveying blades mountedangularly upon the inside surface of the main structure; and eachpresenting a substantially flat surface for engagement with the materialoperated on; means for delivering material into the receiving end of thedrum; and a discharge- In testimony whereof, we have signed our names tothis specification, in the presence of two subscribing witnesses.

GEORGE W. BORTON. JOSEPH L. HILLER.

\Vitnesses WVILLIAM E. BRADLEY, WM. A. BARR.

